TM 55-1930-209-14&P-9-1
Table C-1. Preventive Maintenance Checks and Services for Electrical Power Systems (Continued)
B - Before
D - During
A - After
H - Hourly Interval
Interval
Procedures:
Equipment Is
Item
Item to be
Check for and have repaired
Not Ready/
No.
B D
A
H
Inspected
or adjusted as necessary
Available If:
250 hrs
(e) Install all drain plugs. Fill system
with neutralizing solution or 250 g
(1/2 lb) Sodium Carbonate Crys-
tals (Na2CO.H20) per 40 L (10 US
gal.) water.
(f) Start and run engine for 10 min-
utes. Stop engine and drain neu-
tralizing solution.
(g) Flush system with clean water,
until draining water is dean. Do
not run engine while flushing.
(h) Install all drain plugs.
(i) Fill engine with clean water. Run
the engine for 10 minutes and
drain. Repeat until drained water
is clean.
(j) Add 1 L (1 qt) of Caterpillar Cooling
System Conditioner, or equivalent.
for each 30 L (8 gal) of cooling
system capacity so cooling sys-
tem will have a 3 percent to 6 per-
cent concentration of conditioner.
Most systems will require 2 L (2 qt)
of conditioner at initial fill and .50 L
(1 pt) every 250 service hours.
(k) Mix antifreeze and water to
provide protection to the lowest
expected ambient temperature.
(I) To help avoid air locks, add
coolant slowly, at 19 L (5 US gal)
per minute or less.
6) Fill cooling system with 5 gal of clean
fresh water. Add 2 qt of coolant sys-
tem conditioner.
7) Bring coolant level to within 112 in of
bottom of filler pipe.
8) Start engine with radiator cap off.
When coolant level stabilizes, add
additional water if necessary.
C-18
